You can switch Pokemon at any time outside of battle by pressing Start to bring up the menu, selecting the "Pokemon" option, going to the Pokemon you want to switch, and switching its position. In addition, you can go to the PC in a Pokemon Centers to switch party members for new ones, which is useful if your party is full and you want a new party member.
you switch the Pokemon you want to follow you to the first Pokemon on your list
The Pokemon must've used mean look that's probable way you cannot switch Pokemon.
its.......imblack
Switch Pokemon after every 20 blocks.
you cant unless the Pokemon has refresh or a berry that heals a burn or it has natural cure(only works if they switch out the Pokemon with the ability natural cure).
Pokemon cannot learn Yawn in Pokemon Silver.
you can get celebi from a Pokemon silver event
Lugia
its the silver apercorn in Pokemon silver and its the gold apercorn in Pokemon gold
How do you get to goldenrod city in pokemon silver?
You can't find Mew in Pokemon Silver.
there isn't venasaur in Pokemon silver you have to trade it